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Linearity of Pulse Excited Coil-Less Fluxgate
(IEEE, 2009-10)
In this paper, we study the open-loop linearity of pulse excited coil-less fluxgate. Narrow current pulses can be used instead of classical sinewave for the excitation of the coil-less fluxgate. This method has shown several ...
Crossfield Sensitivity in AMR Sensors
(IEEE, 2009-10)
We discuss the origin of the crossfield sensitivity of AMR sensors, the way how this error may influence the performance of an AMR compass and methods for its correction. Finally, we confirm the simple formulas experimentally. ...
Bi-Metallic Magnetic Wire With Insulating Layer as Core for Orthogonal Fluxgate
(IEEE, 2009-10)
In this paper, we examine the problems related to orthogonal fluxgates realized using magnetic microwires as core. Starting from a description of orthogonal fluxgates evolution, we give a theoretical analysis of the problems ...
Advances in Magnetic Field Sensors
(IEEE, 2010-06)
The most important milestone in the field of magnetic sensors was when AMR sensors started to replace Hall sensors in many applications where the greater sensitivity of AMRs was an advantage. GMR and SDT sensors finally ...
AMR Gradiometer for Mine Detection
(Elsevier Science, 2012)
Anisotropic magnetoresistors (AMRs) are used to build an advanced mine detector. The sensing head involves a gradiometric pair of AMR sensors and a continuous-wave driven excitation coil, so the gradiometer is capable of ...
Systém pro měření Curieho teploty magnetických materiálů, System for Curie temperature measurement of magnetic materials
; Vedoucí práce: Petrucha Vojtěch; Oponent práce: Janásek Vojtěch (České vysoké učení technické v Praze. Vypočetní a informační centrum.Czech Technical University in Prague. Computing and Information Centre., 2020-06-10)
Tato diplomová práce se zabývá návrhem a konstrukcí systému pro měření Curieho teploty feromagnetických materiálů, využívaných v magnetických senzorech. Metodou pro určení Curieho teploty je sledování poklesu indukčnosti ...
Experimental Comparison of the Low-Frequency Noise of Small-Size Magnetic Sensors
(IEEE, 2017)
Small-size ac magnetic-field sensors are used for nondestructive testing (NDT), magnetic particle detection, and other applications, which require high spatial resolution. Up to now, inductive coils dominated this area, ...
Modelování a simulace magnetických materiálů pro magnetické senzory, Magnetic material modelling and simulations for magnetic sensors
; Vedoucí práce: Ripka Pavel; Oponent práce: Roubal Zdeněk (České vysoké učení technické v Praze. Vypočetní a informační centrum.Czech Technical University in Prague. Computing and Information Centre., 2020-10-12)
V této práci jsou prezentovány nové matematické modely magnetických materiálů a tyto modely jsou následně použity pro návrh magnetických senzorů. Jedná se jak o teoretické analýzy, tak praktické aplikace. V první části ...
The apparent permeability and the amplification factor of magnetic wires and wire arrays
(Elsevier, 2021)
We have calculated and plotted the apparent permeability and the demagnetization factor of single magnetic wires. We have also confirmed the accuracy of the analytical formula for the conversion between the apparent ...